UNESCO World Heritage Sites book. The World Heritage List is a valuable tool in the battle to preserve cultural and natural heritage. This sixth edition covers the complete World Heritage List: 1007 cultural, natural and mixed sites in 160 countries. Complete with gorgeous photographs and updated maps, World Heritage Sites is uniquely comprehensive. Its strict criteria mean only the most extraordinary and important sites qualify, such as the Statue of Liberty, the Great Barrier Reef, Historic Vienna, the Bikini Atoll Nuclear Test Site, Robben Island, Ancient Damascus, and the Tower of London.